Machine for boring tires and the like



Aug. 28, 1923. 1,466,028

J. MILEY MACHINE FOR BORING TIRES AND THE LIKE Original-Filed Aug. 4, 1921 3 Sheets-Sheet l Aug. 28, 19723.

J. MILEY MCHINE FOR BORING TIRES AND THE LIKE @eats-Sheet 2 m a al-.

Original Filed Aug.v4. 1921 J. Mau-:Y

MACHINE FOR BORING'TIRES lANQD THE LIKE Original Filed Aug. 4. "1921 s sheets-sheev 5- Patented filing. Z8, 1923.

n f ir e sa rice. i

JOHN VIILEY, OF REDDIS-I, NEAR STOCKPORT, ENGLAND, ASSIGNOR TO CRVEN l BROTHERS (MANCHESTER) LIIIITED, OE'V REDDISI-I, ENGLAND.

MACHINE -ron Boni-NG trInns AND THE LIKE.

.Continuation of application 'Serial No. 489,664, filed August 4, 1921. This application filed `April 8, v 1922. serial No. 550,715.

T o all 'whom t may concern Be it known that I, JOHN lS/iILEY, a subject of thevKing off-Great Britain and Ireland, and residing at Vauxhall vllorks, Red,- fdish, near Stockport, vin the county of Lancaster, England, 1have invented certain new .and useful Improvementsinor vRelating-to lMachines for Boring Tires and thelile, of 0whichthe following is a specification.

l rlhis invention relates to verticalboring mills intended more particularly for boring the metaltires of railway wheels and the lilre,rand this application isa continuation of fmy application vSerial No. 489,664, filed August 4, 1921. In connection with such machine it has been proposed to mount the tool holders upon a Axedfpart of the machine and to lcause ya vplatform or table upon which the work is clamped to rotate about the tool holders.

The present invention has for its .object to provide improved or simplied constructions of vertical boring millsof this kind.

The invention consists briefly in mounting the tool holders upon cross slides which are `carried upon similar carriers or heads facing each other.

.Another feature of this invention consists in effecting the tool feed motion by means of pinions which are rota-ted by an internally toothed wheel carried upon the rotatingplatform or table. n

In the raccompanying drawings: Y Figure 1 is la side elevation lofa tire boringmachine embodying in one form the fealtures of the present invention;

' Figure 2 is an velevation thereof partly in sectiontakenonthe line A-B of Figure 3V, andy Figure 3 is a planview.

l yReferring to the machine illustrated by way of examplein these drawings 1 repre sents the baseof the machinewhich is of .circular f orm ,and well ribbed Vand is furnished with. an annular turned surface@ for the reception'of a revolving platform or table 6, which arriesthe tire to be bored. A circular trough aY isl .cast round the base 1 vto receive spentV lubricating oil.

An annularlannulus 1av is .formed uponthe machine bodyA and within'` `this annulus are two semi-circular bases 4 (of the tool carscrews b.

The vstandards 7 carry Vclamps 8 pivotal'lyV mounted upon the'iupper ends of links vr9 l Ywhich] at their lower ends are pivotally mounted upon the standards 7, the"` stand.-

jards being suitably,v bolted or screwed to the platform 6. 1 v

,The vtire is thus capable'r of lbeing heldse- ,curely in posi-tion, fas shown in Figuresrl and 2, being Vsupported by'ledges or rests centered by means of ladjusting screws 1Q V and clamped by screws 11. f

This fixing of the tire renders all clampning stressesself-contained and freesthe tire which serves an important purpose','kas will presently be explained.

lThe two tool carriers" or heads, which are. ldentical with each other, thus facilitat- Ing replacement, each comprise .a semi-cirvcularbase4 integral witha body upon which .a vertical slide 13 and a horizontal slide 14 are carried as shown.

A tool post 12t1 is detachably secured to each A,

riers'or heads 5) secured to the bodyby p preferably constructed in duplicate so that one gang of tools may be ige-ground and set up In readiness 1n its boX`while' another gang is in operation.

gaging a block` 7c rigid withithe block 13.

The shaft 16 is capable offbeinglclutched to ...9.5 -a'pinion26 by a clutch operated by a handle 31, the Vpinion 26 being continuously inmesh with a gear wheel 25. lntermittentpartial rotation ofthe gear wheel` 25is effected means of la bell crank lever 2,4carrying a 'reversible ratchet pawl 24a upon Vone arm and being pivotally connected to a link V22 at its other arm. Y Y Y The link 22 servesY to couple the lever 24 to a variable throw eccentric 18 whichis adjusted to produce the desired Yrate of feed. The eccentric 1S is rigid With a pinion 2 1 meshing with a further pinion carried uponV a vertical shaft n. f

At its lower end the shaft n carries a gear 19 which is in continuous mesh With the internally toothed Wheel 6a referred to above.

By this means it Willbe apparent that if the handle 31 be operated so as vto lock the pinion 26 to the spindle 16, then the latter yWill be intermittently rotated by means of Y the internally toothed Wheel 6a and an intermittent vertical feed of the block 13 produced. c

"As regards the horizontal feeding of the slide 14 a pinion 274 is provided Whichfis also constantly in mesh With pinion25 and iscapable of being Vconnectedcto the Vertical shaft alternatively to the connection of the pinion 26 to the shaft 16by means of the lever 31; The shaft SOc-arries a Vhelical gear 0 vmeshing With 'a corresporiding:` gearV p upon the screw shaft 17 Whichlatter passes through a threaded portion of the horizontal feed block 14.v l

Thus it Will be apparent that if the liandle 31 b-e operated to lock the pinion' 27 to Y short shaft and hand Wheel 12 are provided. Y

the spindle 30, then the spindles 30 and 17 vvill be rotated intermittently and an intermittent horizontal feed produced. Y

A' bevel Wheel r rigid with the spur `ivheel 126 meshes with a bevelfwheel Vs carried upo-n a spindle inthe block t and a detachable By this vmeans the spur Wheel 26 may be rotated by hand and consequently horizontal and vertical feeding of the toolV effected alternatively. The short shaftand hand Wheel are removed to enable the Work to be 'set up and are then replaced.

VIt will be observedthat the drive for the automatic feeding mechanism ofeac-h tool carrier is incorporated with Vthe other tool carrier and that the vvholeof the feed mech-Yy Yanism is situate outside the main body 1 of the machinewvhere it is' readily accessible.

Either tool carrier may be removed complete with its feedV mechanism by merely uncoupling the links 22,' the remainder of the machine remaining undisturbed. g

Having now described my invention, What I clamfas'new and desire to secure by Letters Patent is:-

1. Apmachine for boring tires or'the like, including inrcombination a stationary base,

la' tool carrier detachablyimounted thereon, 'asimilar tool carrier detachablymounted on VVsaid base in a position facing said first-mentioned tool carrier, 'a hollow circular .platform having an internal gear rotatably. carried upon and surrounding said base, means for clamping tires or the like to said platform, means for rotating said platform, a tool slidably supported upon each of said tool carriers and a gear Wheel meshing With said internal gear and having connections for operating said tools Vrelatively Yto their Yrespective carrlers. Y A

boring tires or the like,

2. A machine for including in combination a stationary base, a rtool carrier detachably mounted thereon, a similar tool carrier detachably mounted on said base in a position facing said first-mentioned tool carrier, a platform rotatably carried upon and surrounding said base, means for clamping tires or the like to said platform,.means for rotatingsaid platform, a toothed tool feed driving .Wheel mounted upon and rotated by said platform, tool feed driving mechanism supported by one of said toolcarriers and incorporating artoothed Wheel continuously in Vmesh With said feed Y driving Wheel, independent tool feed mecha,-

carriers and mechanically connected to said feed drivingmechanism. Y

3. A machine for boringrtires or the like,

including in combination, a stationary base,

lnism supported by the other of said toolr a tool carrier detachably mountedV thereon,v

a similar tool carrier detachablyqmounted on said base in a 'position facing said irst- Y Vmeans for said feed drive mechanism.

4. VA machine for boring tiresY or the like, including in combination a Ystationary base, Ya tool -carrier detachably mounted thereon, a similar tool carrier Ydetachably mounted on Vsaid base in a position facing said Yfirst. mentioned tool' carrier, a platform rotatably carried upon and surrounding said base, means for clamping tires or theV liketo said platform, means for rotating said platform, a toothed tool feed driving Wheel mounted uponand `rotated by said platform, a vertical spindle carried in one of said tool carriers, a pinion on the lower. endY of said spindle .continuously meshing with said toothed tool feed driving Wheel, a pinion on the upper end of said spindle', `a further pinion meshing there-With, a variable throw eccentric Ymember. `rigid VWith said vfurther pmiomivertical tool feed VVmechanism and horizontal tool feed mechanism carried upon ins ' feed arm and said Variable throw eccentric.

5. AY machine for boring tires or the like including a base, a platform, one of these parts being encircled by the other and rotateA able one around the other and carrying an internal gear, a tool carrier mounted on one 30 of these parts, and toolV operating means .having a gear intermeshing with said internal gear for moving the tools.

In testimony` whereof I have signed my name to this specication.

JOHN MILEY. 

